Supply rack



FIG. 1 is a perspective view of a supply rack showing our new design;

FIG. 2 is a right side view thereof, which is a mirror image of the left side not shown;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. [

The broken line showing of elements are for illustrative purposes only and form no part of the claimed invention.] 

The ornamental design for a supply rack, as shown and described. 